Fix build failing if DNS is not working. Building UnrealIRCd should never fail

because it has no internet access, like when fetching the repository
(modules.list file) of 3rd party modules.

Previously I had..
url_start_async(request);
synchronous_http_request_in_progress = 1;
.. which worked fine for the "cannot connect case", like port blocked
or timeout connecting. But if DNS fails then the step of setting
synchronous_http_request_in_progress = -1 (so failed) already happens
during the url_start_async(request); call, and then the line after it
sets 'synchronous_http_request_in_progress = 1;' so we miss that it
failed and wait in the I/O loop forever.
Simply swapping the two lines of code fixes this.

The other change is that when running the ModuleManager in "make" we should
ignore the exit code. I probably broke that while refactoring and adding
non-zero exit codes in de modulemanager past few months for this release.

src/misc.c

@@ -3050,8 +3050,8 @@ const char *synchronous_http_request(const char *url, int max_redirects, int con
 	request->keep_file = 1;
 	request->connect_timeout = connect_timeout;
 	request->transfer_timeout = transfer_timeout;
-	url_start_async(request);
 	synchronous_http_request_in_progress = 1;
+	url_start_async(request);
 
 	while (synchronous_http_request_in_progress == 1)
 	{

src/modules/third/Makefile.in

@@ -40,7 +40,7 @@ RM=@RM@
 all: build
 
 build:
-	../../../src/ircd -m upgrade --no-install
+	-../../../src/ircd -m upgrade --no-install
 	../../../src/ircd -m compile-all
 
 custommodule: $(MODULEFILE).c