Rename all README.md.src files to README.src.md

This is intended to make Github match the ".md" suffix and treat the
files as markdown format. This should enable better support in the web
interface e.g. showing diffs with the rendered markdown.

Link to relevant Github feature:
https://help.github.com/articles/rendering-differences-in-prose-documents/

src/Makefile

@@ -16,7 +16,7 @@ CSRC   = $(shell find . -regex '[^\#]*\.c' -not -regex './arch/.*' -printf '%P '
 CHDR   = $(shell find . -regex '[^\#]*\.h' -printf '%P ')
 ASM    = $(shell find . -regex '[^\#]*\.dasl' -printf '%P ')
 ARCHSRC= $(shell find . -regex '^./arch/[^\#]*\.c' -printf '%P ')
-RMSRC  = $(shell find . -name  README.md.src -printf '%P ')
+RMSRC  = $(shell find . -name  README.src.md -printf '%P ')
 # regexp is to include program/foo but not program/foo/bar
 PROGRAM = $(shell find program -regex '^[^/]+/[^/]+' -type d -printf '%P ')
 # sort to eliminate potential duplicate of programs.inc
@@ -30,7 +30,7 @@ ARCHOBJ:= $(patsubst %.c,obj/%_c.o,    $(ARCHSRC))
 ASMOBJ := $(patsubst %.dasl,obj/%_dasl.o,   $(ASM))
 JITOBJS:= $(patsubst %,obj/jit_%.o,$(JITSRC))
 EXTRAOBJS := obj/jit_tprof.o obj/jit_vmprof.o obj/strict.o
-RMOBJS := $(patsubst %.src,%,$(RMSRC))
+RMOBJS := $(patsubst %.src.md,%.md,$(RMSRC))
 INCOBJ := $(patsubst %.inc,obj/%_inc.o, $(INCSRC))
 EXE    := bin/snabb $(patsubst %,bin/%,$(PROGRAM))
 
@@ -152,7 +152,7 @@ $(JITOBJS): obj/jit_%.o: ../lib/luajit/src/jit/%.lua $(OBJDIR)
 	$(Q) luajit -bg -n $(patsubst obj/jit_%.o, jit.%, $@) $< $@
 
 
-$(RMOBJS): %: %.src
+$(RMOBJS): %.md: %.src.md
 	$(E) "MARKDOWN  $@"
 	$(Q) scripts/process-markdown $< > $@