PATCH: add missing uses of mod_export

[Oliver Kiddle <opk@xxxxxxx>]

This adds mod_export to a number of functions/variables that are
referenced from modules.

Oliver

diff --git a/Src/Zle/zle_keymap.c b/Src/Zle/zle_keymap.c
index 7f31f837c..cda24847d 100644
--- a/Src/Zle/zle_keymap.c
+++ b/Src/Zle/zle_keymap.c
@@ -123,7 +123,7 @@ struct remprefstate {
 /**/
 Keymap curkeymap, localkeymap;
 /**/
-char *curkeymapname;
+mod_export char *curkeymapname;
 
 /* the hash table of keymap names */
 
diff --git a/Src/exec.c b/Src/exec.c
index c1181c5eb..d39b6f3ac 100644
--- a/Src/exec.c
+++ b/Src/exec.c
@@ -5323,7 +5323,8 @@ static const char *const ANONYMOUS_FUNCTION_NAME = "(anon)";
  * (though I doubt anyone would ever do that).
  */
 /**/
-int is_anonymous_function_name(const char *name)
+mod_export int
+is_anonymous_function_name(const char *name)
 {
     return !strcmp(name, ANONYMOUS_FUNCTION_NAME);
 }
diff --git a/Src/input.c b/Src/input.c
index 320fd6500..b78c91680 100644
--- a/Src/input.c
+++ b/Src/input.c
@@ -610,7 +610,7 @@ inungetc(int c)
 /* stuff a whole file into memory and return it */
 
 /**/
-off_t
+mod_export off_t
 zstuff(char **out, const char *fn)
 {
     FILE *in;
diff --git a/Src/jobs.c b/Src/jobs.c
index 2d0465a22..66a7ec123 100644
--- a/Src/jobs.c
+++ b/Src/jobs.c
@@ -1105,7 +1105,7 @@ should_report_time(Job j)
 }
 
 /**/
-char *
+mod_export char *
 sigmsg(int sig)
 {
     static char *unknown = "unknown signal";
diff --git a/Src/utils.c b/Src/utils.c
index 5e41b712b..e7e3f4f8d 100644
--- a/Src/utils.c
+++ b/Src/utils.c
@@ -1071,7 +1071,7 @@ uid_t cached_uid;
 char *cached_username;
 
 /**/
-char *
+mod_export char *
 get_username(void)
 {
 #ifdef USE_GETPWUID
@@ -2748,7 +2748,7 @@ read_poll(int fd, int *readchar, int polltty, zlong microseconds)
  */
 
 /**/
-long
+mod_export long
 timespec_diff_us(const struct timespec *t1, const struct timespec *t2)
 {
     int reverse = (t1->tv_sec > t2->tv_sec);
@@ -2793,7 +2793,7 @@ zmonotime(time_t *tloc)
  */
 
 /**/
-int
+mod_export int
 zsleep(long us)
 {
 #ifdef HAVE_NANOSLEEP