to work better on embedded targets running off the initial console.
Also, first merge of patches from Debian. This part holds all of the
sysunix.c changes and some 8-bit patches and SIGSTP patches in the
editline.c file.
=====================
Fix another build warning for Arm cross-gcc, which actually was v4.1.2
This time getpid() was missing unistd.h, but kill() was also missing
signal.h. Added test for signal.h, but left out unistd.h since we
already define SYS_UNIX -- which we should really check for instead...
The rest are cosmetic prototype or automake/autoconf fixes.
=====================
Don't use AC_FUNC_MALLOC/REALLOC to check for malloc()/realloc() this seems to
confuse not only AIX but also embedded targets using uClibc (Snapgear). Instead
we now check for malloc.h and include that in the internal editline.h
