Allow to customize file name of make dist result.

Fixes JuliaLang#7407

Makefile

@@ -12,6 +12,11 @@ VERSDIR = v`cut -d. -f1-2 < VERSION`
 INSTALL_F = install -pm644
 INSTALL_M = install -pm755
 
+#file name of make dist result
+ifeq ($(JULIA_DIST_TARNAME),)
+ JULIA_DIST_TARNAME = julia-$(JULIA_COMMIT)-$(OS)-$(ARCH)
+endif
+
 all: default
 default: release
 
@@ -281,7 +286,7 @@ ifeq ($(OS), WINNT)
  cat ./contrib/windows/7zS.sfx ./contrib/windows/7zSFX-config.txt "julia-install-$(JULIA_COMMIT)-$(ARCH).7z" > "julia-${JULIA_VERSION}-${ARCH}.exe"
  -rm -f julia-installer.exe
 else
- $(TAR) zcvf julia-$(JULIA_COMMIT)-$(OS)-$(ARCH).tar.gz julia-$(JULIA_COMMIT)
+ $(TAR) zcvf $(JULIA_DIST_TARNAME).tar.gz julia-$(JULIA_COMMIT)
 endif
  rm -fr $(prefix)