Remove special casing of http, https and ftp

HTTP, HTTPS and FTP are no longer special to transport code. Also
add support for FTPS (curl supports it so it is easy).
Signed-off-by: NIlari Liusvaara <ilari.liusvaara@elisanet.fi>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

.gitignore

@@ -107,6 +107,10 @@
 /git-relink
 /git-remote
 /git-remote-curl
+/git-remote-http
+/git-remote-https
+/git-remote-ftp
+/git-remote-ftps
 /git-repack
 /git-replace
 /git-repo-config

Makefile

@@ -424,6 +424,16 @@ BUILT_INS += git-stage$X
 BUILT_INS += git-status$X
 BUILT_INS += git-whatchanged$X
 
+ifdef NO_CURL
+REMOTE_CURL_PRIMARY =
+REMOTE_CURL_ALIASES =
+REMOTE_CURL_NAMES =
+else
+REMOTE_CURL_PRIMARY = git-remote-http$X
+REMOTE_CURL_ALIASES = git-remote-https$X git-remote-ftp$X git-remote-ftps$X
+REMOTE_CURL_NAMES = $(REMOTE_CURL_PRIMARY) $(REMOTE_CURL_ALIASES)
+endif
+
 # what 'all' will build and 'install' will install in gitexecdir,
 # excluding programs for built-in commands
 ALL_PROGRAMS = $(PROGRAMS) $(SCRIPTS)
@@ -1097,7 +1107,7 @@ else
 	else
 		CURL_LIBCURL = -lcurl
 	endif
-	PROGRAMS += git-remote-curl$X git-http-fetch$X
+	PROGRAMS += $(REMOTE_CURL_NAMES) git-http-fetch$X
 	curl_check := $(shell (echo 070908; curl-config --vernum) | sort -r | sed -ne 2p)
 	ifeq "$(curl_check)" "070908"
 		ifndef NO_EXPAT
@@ -1676,7 +1686,13 @@ git-http-push$X: revision.o http.o http-push.o $(GITLIBS)
 	$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) \
 		$(LIBS) $(CURL_LIBCURL) $(EXPAT_LIBEXPAT)
 
-git-remote-curl$X: remote-curl.o http.o http-walker.o $(GITLIBS)
+$(REMOTE_CURL_ALIASES): $(REMOTE_CURL_PRIMARY)
+	$(QUIET_LNCP)$(RM) $@ && \
+	ln $< $@ 2>/dev/null || \
+	ln -s $< $@ 2>/dev/null || \
+	cp $< $@
+
+$(REMOTE_CURL_PRIMARY): remote-curl.o http.o http-walker.o $(GITLIBS)
 	$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) \
 		$(LIBS) $(CURL_LIBCURL) $(EXPAT_LIBEXPAT)
 
@@ -1852,6 +1868,7 @@ endif
 ifneq (,$X)
 	$(foreach p,$(patsubst %$X,%,$(filter %$X,$(ALL_PROGRAMS) $(BUILT_INS) git$X)), test '$(DESTDIR_SQ)$(gitexec_instdir_SQ)/$p' -ef '$(DESTDIR_SQ)$(gitexec_instdir_SQ)/$p$X' || $(RM) '$(DESTDIR_SQ)$(gitexec_instdir_SQ)/$p';)
 endif
+
 	bindir=$$(cd '$(DESTDIR_SQ)$(bindir_SQ)' && pwd) && \
 	execdir=$$(cd '$(DESTDIR_SQ)$(gitexec_instdir_SQ)' && pwd) && \
 	{ test "$$bindir/" = "$$execdir/" || \
@@ -1865,6 +1882,12 @@ endif
 		ln -s "git$X" "$$execdir/$$p" 2>/dev/null || \
 		cp "$$execdir/git$X" "$$execdir/$$p" || exit; \
 	  done; } && \
+	{ for p in $(REMOTE_CURL_ALIASES); do \
+		$(RM) "$$execdir/$$p" && \
+		ln "$$execdir/git-remote-http$X" "$$execdir/$$p" 2>/dev/null || \
+		ln -s "git-remote-http$X" "$$execdir/$$p" 2>/dev/null || \
+		cp "$$execdir/git-remote-http$X" "$$execdir/$$p" || exit; \
+	  done; } && \
 	./check_bindir "z$$bindir" "z$$execdir" "$$bindir/git-add$X"
 
 install-doc:

transport.c

@@ -918,14 +918,6 @@ struct transport *transport_get(struct remote *remote, const char *url)
 
 		data->conn = NULL;
 		data->got_remote_heads = 0;
-	} else if (!prefixcmp(url, "http://")
-		|| !prefixcmp(url, "https://")
-		|| !prefixcmp(url, "ftp://")) {
-		/* These three are just plain special. */
-		transport_helper_init(ret, "curl");
-#ifdef NO_CURL
-		error("git was compiled without libcurl support.");
-#endif
 	} else {
 		/* Unknown protocol in URL. Pass to external handler. */
 		int len = external_specification_len(url);