Share gdb/environ.[ch] with gdbserver

We will need access to the environment functions when we share
fork_inferior between GDB and gdbserver, therefore we simply make the
API on gdb/environ.[ch] available on common/.  No extra adjustments
are needed to make it compile on gdbserver.

gdb/ChangeLog:
2017-03-07  Sergio Durigan Junior  <sergiodj@redhat.com>

	* Makefile.in (SFILES): Replace "environ.c" with
	"common/environ.c".
	(HFILES_NO_SRCDIR): Likewise, for "environ.h".
	* environ.c: Include "common-defs.h" instead of "defs.h.  Moved
	to...
	* common/environ.c: ... here.
	* environ.h: Moved to...
	* common/environ.h: ... here.

gdb/gdbserver/ChangeLog:
2017-03-07  Sergio Durigan Junior  <sergiodj@redhat.com>

	* Makefile.in (SFILES): Add "common/environ.c".
	(OBJS): Add "common/environ.h".

1 files changed, 2 insertions, 2 deletions

diff --git a/gdb/Makefile.in b/gdb/Makefile.in
index 268c2c6ead..08187427cd 100644
--- a/gdb/Makefile.in
+++ b/gdb/Makefile.in
@@ -1061,7 +1061,6 @@ SFILES = \
 	dwarf2loc.c \
 	dwarf2read.c \
 	elfread.c \
-	environ.c \
 	eval.c \
 	event-loop.c \
 	event-top.c \
@@ -1207,6 +1206,7 @@ SFILES = \
 	common/common-regcache.c \
 	common/common-utils.c \
 	common/errors.c \
+	common/environ.c \
 	common/fileio.c \
 	common/filestuff.c \
 	common/format.c \
@@ -1285,7 +1285,6 @@ HFILES_NO_SRCDIR = \
 	dwarf2-frame-tailcall.h \
 	dwarf2expr.h \
 	dwarf2loc.h \
-	environ.h \
 	event-loop.h \
 	event-top.h \
 	exceptions.h \
@@ -1486,6 +1485,7 @@ HFILES_NO_SRCDIR = \
 	common/common-types.h \
 	common/common-utils.h \
 	common/errors.h \
+	common/environ.h \
 	common/fileio.h \
 	common/format.h \
 	common/gdb_assert.h \