* windows/Makefile.am (loaddrv_LDFLAGS): remove, the -mno-cygwin
flag is supposed to be set in CFLAGS by ./configure
* configure.ac: add a check for the presence of usleep(), add a
check whether the linker accepts -static
* avrdude.h: protect prototype for usleep by !defined(HAVE_USLEEP)
* ppwin.c (usleep): protect by !defined(HAVE_USLEEP)
* main.c: silence "array subscript of type char" compiler warnings
by casting all arguments to tolower()/toupper() and isspace()/
isdigit()/ispunct() to "int"
* butterfly.c: (Dito.)
* avr910.c: (Dito.)
git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@936 81a1dc3b-b13d-400b-aceb-764788c761c2
8ffc939aff