Fixed typo in example Makefile code and slimmed it down more.

Reverted signature of git_signature_new.
Removed error check wrappers (voted down). Made Makefile
work out of the box on Linux and Solaris when standard
cmake build instructions for the library are followed.

examples/Makefile

 .PHONY: all
 
+CC = gcc
 CFLAGS = -g -I../include
-LFLAGS = -Ldirectory-containing-libgit
+LFLAGS = -L../build -lgit2 -lz
 
 all: general showindex
 
-general : general.c
-	gcc -o general $(CFLAGS) general.c $(LFLAGS) -lgit2 -lz
-
-showindex : showindex.c
-	gcc -o showindex $(CFLAGS) showindex.c $(LFLAGS) -lgit2 -lz
+% : %.c
+	$(CC) -o $@ $(CFLAGS) $< $(LFLAGS)
 
 clean:
-	rm general showindex
+	$(RM) general showindex

include/git2/signature.h

@@ -48,7 +48,7 @@ GIT_BEGIN_DECL
  * @param offset timezone offset in minutes for the time
  * @return 0 on success; error code otherwise
  */
-GIT_EXTERN(int) git_signature_new(const git_signature **sig_out, const char *name, const char *email, git_time_t time, int offset);
+GIT_EXTERN(int) git_signature_new(git_signature **sig_out, const char *name, const char *email, git_time_t time, int offset);
 
 /**
  * Create a new action signature with a timestamp of 'now'. The

src/signature.c

@@ -81,7 +81,7 @@ static int process_trimming(const char *input, char **storage, const char *input
 	return GIT_SUCCESS;
 }
 
-int git_signature_new(const git_signature **sig_out, const char *name, const char *email, git_time_t time, int offset)
+int git_signature_new(git_signature **sig_out, const char *name, const char *email, git_time_t time, int offset)
 {
 	int error;
 	git_signature *p = NULL;