* sim/ucsim/configure: little improvement of Cygwin-detection

	* sim/ucsim/configure:    little improvement of Cygwin-detection
	* sim/ucsim/configure.in: little improvement of Cygwin-detection
	* sim/ucsim/cmd.src/newcmdcl.h: include <sys/types.h> to define fd_set automated build
	* support/regression/tests/bug-221100.c: small changes for mcs51
	* support/regression/tests/bug-221168.c: small changes for mcs51
	* support/regression/tests/bug-227710.c: small changes for mcs51
	* support/regression/tests/staticinit.c: small changes for mcs51
	* as/mcs51/aslink.h: accept everything as symbol name in rel-files, bug fix ID 452601
	* as/mcs51/lklex.c:  accept everything as symbol name in rel-files, bug fix ID 452601
	* as/mcs51/lksym.c:  accept everything as symbol name in rel-files, bug fix ID 452601

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@1191 4a8a32a2-be11-0410-ad9d-d568d2c75423