* Makefile.in (site.exp): Don't insert host_os, etc.
(just-check): Just use RUNTEST with RUNTESTFLAGS only.
(distclean): Check existence of subdir.
* gdb.base/configure.in (hppa*-*-hpux*): Recognize.
* gdb.base/Makefile.in: General cleanup and simplification.
Use CC, CFLAGS, and LDFLAGS instead of ..._FOR_TARGET versions
to build executables. Use default rule to build .o files.
(EXPECT, RUNTEST, CC): Fix relative pathname.
(site.exp): Don't insert host_os, etc.
* gdb.base/signals.c (main): Don't call signal unless SIGALRM
and/or SIGUSR1 defined.
* gdb.base/watchpoint.c: Don't include stdio.h a second time.
* gdb.c++/Makefile.in: General cleanup and simplification.
Use CC, CFLAGS, and LDFLAGS instead of ..._FOR_TARGET versions
(CFLAGS): Remove.
(EXPECT, RUNTEST_FOR_TARGET, CXX): Fix relative pathname.
