LP Bug 1025567: Service initialization segfaults upon adapter loading.

Do not use static TmpFileNameTemplateDefault std::string when initializing
Service because Service may be initialized during static initialization, and
the string may not be initialized before Service.

https://bugs.launchpad.net/ecap/+bug/1025567


Index: src/Service.cc
===================================================================
--- src/Service.cc	(revision 13269)
+++ src/Service.cc	(working copy)
@@ -35,7 +35,6 @@
 	mode(aMode),
 	vbAccumulationLimit(0),
 	blockOnError(false),
-	tmpFileNameTemplate(TmpFileNameTemplateDefault),
 	lastDbUpdate(0)
 {
 }
@@ -90,6 +89,8 @@
 }
 
 void Adapter::Service::setAll(const Options &cfg) {
+	tmpFileNameTemplate = TmpFileNameTemplateDefault;
+
 	Cfgtor cfgtor(*this);
 	cfg.visitEachOption(cfgtor);