I2C clock streching on esp8266.

Hey, I have tryed that, but I get a lot of compiler fault.
So it is over my head at the moment.
I only seems that could be nice, with a message if it took too long.

In file included from /home/poul/Programmer/ESP8266_NONOS_SDK_V1.5.3_16_04_18/ESP8266_NONOS_SDK/include/ets_sys.h:11:0,
                 from targets/esp8266/i2c_master.c:35:
/home/poul/Programmer/ESP8266_NONOS_SDK_V1.5.3_16_04_18/ESP8266_NONOS_SDK/include/c_types.h:15:29: error: conflicting types for 'uint32_t'
 typedef unsigned long       uint32_t;
                             ^
In file included from /home/poul/Programmer/uPython/esp-open-sdk/xtensa-lx106-elf/lib/gcc/xtensa-lx106-elf/4.8.2/include/stdint.h:9:0,
                 from /home/poul/Programmer/Espruino/tve/Espruino/src/jsutils.h:23,
                 from targets/esp8266/i2c_master.c:34:
/home/poul/Programmer/uPython/esp-open-sdk/xtensa-lx106-elf/xtensa-lx106-elf/include/stdint.h:81:22: note: previous declaration of 'uint32_t' was here
 typedef unsigned int uint32_t;
                      ^
In file included from /home/poul/Programmer/ESP8266_NONOS_SDK_V1.5.3_16_04_18/ESP8266_NONOS_SDK/include/ets_sys.h:11:0,
                 from targets/esp8266/i2c_master.c:35:
/home/poul/Programmer/ESP8266_NONOS_SDK_V1.5.3_16_04_18/ESP8266_NONOS_SDK/include/c_types.h:17:29: error: conflicting types for 'int32_t'
 typedef signed long         int32_t;
                             ^
In file included from /home/poul/Programmer/uPython/esp-open-sdk/xtensa-lx106-elf/lib/gcc/xtensa-lx106-elf/4.8.2/include/stdint.h:9:0,
                 from /home/poul/Programmer/Espruino/tve/Espruino/src/jsutils.h:23,
                 from targets/esp8266/i2c_master.c:34:
/home/poul/Programmer/uPython/esp-open-sdk/xtensa-lx106-elf/xtensa-lx106-elf/include/stdint.h:80:20: note: previous declaration of 'int32_t' was here
 typedef signed int int32_t;
                    ^
In file included from /home/poul/Programmer/Espruino/tve/Espruino/src/jsutils.h:24:0,
                 from targets/esp8266/i2c_master.c:34:
/home/poul/Programmer/ESP8266_NONOS_SDK_V1.5.3_16_04_18/ESP8266_NONOS_SDK/include/c_types.h:85:25: error: two or more data types in declaration specifiers
 typedef unsigned char   bool;
                         ^
In file included from /home/poul/Programmer/ESP8266_NONOS_SDK_V1.5.3_16_04_18/ESP8266_NONOS_SDK/include/ets_sys.h:11:0,
                 from targets/esp8266/i2c_master.c:35:
/home/poul/Programmer/ESP8266_NONOS_SDK_V1.5.3_16_04_18/ESP8266_NONOS_SDK/include/c_types.h:85:1: warning: useless type name in empty declaration [enabled by default]
 typedef unsigned char   bool;
 ^
/home/poul/Programmer/ESP8266_NONOS_SDK_V1.5.3_16_04_18/ESP8266_NONOS_SDK/include/c_types.h:87:0: warning: "true" redefined [enabled by default]
 [#define](https://forum.espruino.com/search/?q=%23define) true            (1)
 ^
In file included from /home/poul/Programmer/Espruino/tve/Espruino/src/jsutils.h:24:0,
                 from targets/esp8266/i2c_master.c:34:
/home/poul/Programmer/uPython/esp-open-sdk/xtensa-lx106-elf/lib/gcc/xtensa-lx106-elf/4.8.2/include/stdbool.h:34:0: note: this is the location of the previous definition
 [#define](https://forum.espruino.com/search/?q=%23define) true 1
 ^
In file included from /home/poul/Programmer/ESP8266_NONOS_SDK_V1.5.3_16_04_18/ESP8266_NONOS_SDK/include/ets_sys.h:11:0,
                 from targets/esp8266/i2c_master.c:35:
/home/poul/Programmer/ESP8266_NONOS_SDK_V1.5.3_16_04_18/ESP8266_NONOS_SDK/include/c_types.h:88:0: warning: "false" redefined [enabled by default]
 [#define](https://forum.espruino.com/search/?q=%23define) false           (0)
 ^
In file included from /home/poul/Programmer/Espruino/tve/Espruino/src/jsutils.h:24:0,
                 from targets/esp8266/i2c_master.c:34:
/home/poul/Programmer/uPython/esp-open-sdk/xtensa-lx106-elf/lib/gcc/xtensa-lx106-elf/4.8.2/include/stdbool.h:35:0: note: this is the location of the previous definition
 [#define](https://forum.espruino.com/search/?q=%23define) false 0
 ^
In file included from /home/poul/Programmer/ESP8266_NONOS_SDK_V1.5.3_16_04_18/ESP8266_NONOS_SDK/include/ets_sys.h:11:0,
                 from targets/esp8266/i2c_master.c:35:
/home/poul/Programmer/ESP8266_NONOS_SDK_V1.5.3_16_04_18/ESP8266_NONOS_SDK/include/c_types.h:89:0: warning: "TRUE" redefined [enabled by default]
 [#define](https://forum.espruino.com/search/?q=%23define) TRUE            true
 ^
In file included from targets/esp8266/i2c_master.c:34:0:
/home/poul/Programmer/Espruino/tve/Espruino/src/jsutils.h:116:0: note: this is the location of the previous definition
 [#define](https://forum.espruino.com/search/?q=%23define) TRUE (1)
 ^
In file included from /home/poul/Programmer/ESP8266_NONOS_SDK_V1.5.3_16_04_18/ESP8266_NONOS_SDK/include/ets_sys.h:11:0,
                 from targets/esp8266/i2c_master.c:35:
/home/poul/Programmer/ESP8266_NONOS_SDK_V1.5.3_16_04_18/ESP8266_NONOS_SDK/include/c_types.h:90:0: warning: "FALSE" redefined [enabled by default]
 [#define](https://forum.espruino.com/search/?q=%23define) FALSE           false
 ^
In file included from targets/esp8266/i2c_master.c:34:0:
/home/poul/Programmer/Espruino/tve/Espruino/src/jsutils.h:115:0: note: this is the location of the previous definition
 [#define](https://forum.espruino.com/search/?q=%23define) FALSE (0)
 ^
cc1: warning: unrecognized command line option "-Wno-float-conversion" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-discarded-qualifiers" [enabled by default]
make: *** [targets/esp8266/i2c_master.o] Fejl 1
make: *** Venter på uafsluttede job....
make: *** wait: Ingen børneprocesser. Stop.