Remove PKG_INSTALL define.

No real need for it, just inline "pkg_install" where appropriate, makes
the code easier to read, at least for me.

actions.c

@@ -284,8 +284,8 @@ do_pkg_remove(Plisthead *removehead)
 			continue;
 
 		/* pkg_install cannot be deleted */
-		if (strcmp(premove->depend, PKG_INSTALL) == 0) {
-			printf(MSG_NOT_REMOVING, PKG_INSTALL);
+		if (strcmp(premove->depend, "pkg_install") == 0) {
+			printf("not removing pkg_install...\n");
 			continue;
 		}
 

messages.h

@@ -70,7 +70,6 @@
 #define MSG_EMPTY_AVAIL_PKGLIST "empty available packages list"
 #define MSG_PKG_INSTALL_LOGGING_TO "pkg_install error log can be found in %s\n"
 #define MSG_EMPTY_FILE_SIZE "warning: package %s has an empty FILE_SIZE on repository.\n"
-#define MSG_NOT_REMOVING "not removing %s...\n"
 #define MSG_WARNS_ERRS "pkg_install warnings: %d, errors: %d\n"
 
 /* depends.c */

order.c

@@ -202,7 +202,7 @@ order_install(Plisthead *impacthead)
 			 */
 			strcpy(tmpcheck, pimpact->full);
 			trunc_str(tmpcheck, '-', STR_BACKWARD);
-			if (!pi_dp && strcmp(tmpcheck, PKG_INSTALL) == 0) {
+			if (!pi_dp && strcmp(tmpcheck, "pkg_install") == 0) {
 				pi_dp = pdp;
 			} else {
 				SLIST_INSERT_HEAD(ordtreehead, pdp, next);

pkgin.h

@@ -57,7 +57,6 @@
 #define PKG_EXT ".tgz"
 #define PKGIN_CONF PKG_SYSCONFDIR"/pkgin"
 #define REPOS_FILE "repositories.conf"
-#define PKG_INSTALL "pkg_install"
 #define PREF_FILE "preferred.conf"
 
 #define LOCAL_SUMMARY 0