Makefile: introducing SRC_NAME var

- store the name as it is in source tree, updated by
  installation to MAIN_NAME (used for man pages install)
(slightly modified version of 3a7b050)

Makefile

@@ -947,7 +947,8 @@ install-sr-man: $(man_prefix)/$(man_dir)/man8 $(man_prefix)/$(man_dir)/man5
 			$(foreach m,$(modules_dirs),\
 				-e "s#/usr/lib/$(CFG_NAME)/$(m)\([^_]\)#$($(m)_target)\1#g") \
 			-e "s#/usr/share/doc/$(CFG_NAME)/#$(doc_target)#g" \
-			< $(CFG_NAME).8 >  \
+			-e "s#$(SRC_NAME)#$(MAIN_NAME)#g" \
+			< $(SRC_NAME).8 >  \
 							$(man_prefix)/$(man_dir)/man8/$(MAIN_NAME).8
 		@chmod 644  $(man_prefix)/$(man_dir)/man8/$(MAIN_NAME).8
 		@sed -e "s#/etc/$(CFG_NAME)/$(CFG_NAME)\.cfg#$(cfg_target)$(MAIN_NAME).cfg#g" \
@@ -955,7 +956,8 @@ install-sr-man: $(man_prefix)/$(man_dir)/man8 $(man_prefix)/$(man_dir)/man5
 			$(foreach m,$(modules_dirs),\
 				-e "s#/usr/lib/$(CFG_NAME)/$(m)\([^_]\)#$($(m)_target)\1#g") \
 			-e "s#/usr/share/doc/$(CFG_NAME)/#$(doc_target)#g" \
-			< $(CFG_NAME).cfg.5 >  \
+			-e "s#$(SRC_NAME)#$(MAIN_NAME)#g" \
+			< $(SRC_NAME).cfg.5 >  \
 			$(man_prefix)/$(man_dir)/man5/$(MAIN_NAME).cfg.5
 		@chmod 644  $(man_prefix)/$(man_dir)/man5/$(MAIN_NAME).cfg.5
 

Makefile.defs

@@ -134,6 +134,8 @@ endif
 CFG_NAME=sip-router
 #config name/name-prefix for distributed scripts
 SCR_NAME=sip-router
+#name in source tree
+SRC_NAME=sip-router
 
 # what to install
 INSTALL_FLAVOUR=$(FLAVOUR)
@@ -1919,7 +1921,7 @@ export exported_vars
 #  cannot be overwritten from environment or command line, unless make cfg
 #  is run)
 saved_fixed_vars:=	MAIN_NAME  CFG_NAME SCR_NAME FLAVOUR INSTALL_FLAVOUR \
-		RELEASE OS ARCH \
+		SRC_NAME RELEASE OS ARCH \
 		C_DEFS DEFS_RM PROFILE CC LD MKDEP MKTAGS LDFLAGS C_INCLUDES \
 		MOD_LDFLAGS LIB_LDFLAGS UTILS_LDFLAGS LIB_SONAME LD_RPATH \
 		LIB_SUFFIX LIB_PREFIX \