Further modernize Hurd code by enforcing strict prototypes and no implicit function declarations.

Most of the changes land in one of these buckets:
* Removed unused declarations.
* Used (void) to represent no parameters instead of () which means an
  undeterminate number of parameters.
* Included missing header files whenever necessary (stdlib.h,
  sys/mman.h, etc)
* Typedefed function pointers to be able to fully declare the parameter
  types.
* Added declarations of library functions that are used elsewhere
  (example is libps/ps.h).
* Made functions static whenever they are only used in that file.
* Forwarded declarations of some methods that were made static.
Message-Id: <ZDD1o7/tVYeZew+G@jupiter.tail36e24.ts.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/Makeconf b/Makeconf
index b6acd382..c2bf9926 100644
--- a/Makeconf
+++ b/Makeconf
@@ -79,6 +79,7 @@ CPPFLAGS += $(INCLUDES) \
 	     -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 \
 	    $($*-CPPFLAGS)
 CFLAGS += -std=gnu99 $(gnu89-inline-CFLAGS) -Wall -Werror=old-style-definition \
+					-Werror=implicit-function-declaration -Werror=strict-prototypes \
 					-g -O3 -fno-strict-aliasing $($*-CFLAGS)
 
 # Include the configure-generated file of parameters.