libslc: Add other function prototypes to stdio.h
libslc: Add check on output to t3__vsprintf
libslc: Comment changes
libslc: Added test for strcmp and renamed libslc test to include the header.
libslc: Formatting string.h
libslc: Add section numbers of C11 standard on string functions
libslc: Add section numbers of C11 standard on stdlib functions
libslc: Add section numbers of C11 standard on stdio functions
libslc: Add section numbers of C11 standard on errno.h
libslc: Add section numbers of C11 standard on assert.h