Don't strip the library and binary

This allows Buildroot to do it if needed, but only if needed.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

Index: b/src/Makefile
===================================================================
--- a/src/Makefile
+++ b/src/Makefile
@@ -665,12 +665,10 @@
 $(LUAJIT_SO): $(LJVMCORE_O)
 	$(E) "DYNLINK   $@"
 	$(Q)$(TARGET_LD) $(TARGET_ASHLDFLAGS) -o $@ $(LJVMCORE_DYNO) $(TARGET_ALIBS)
-	$(Q)$(TARGET_STRIP) $@
 
 $(LUAJIT_T): $(TARGET_O) $(LUAJIT_O) $(TARGET_DEP)
 	$(E) "LINK      $@"
 	$(Q)$(TARGET_LD) $(TARGET_ALDFLAGS) -o $@ $(LUAJIT_O) -lluajit -L. $(TARGET_ALIBS)
-	$(Q)$(TARGET_STRIP) $@
 	$(E) "OK        Successfully built LuaJIT"
 
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