Makefiles: remove spurious spaces/tabs

Makefile

@@ -3,24 +3,24 @@ GZIP=gzip
 #  amount of shell command line parsing going on. echo "" on
 #  Windows yields literal "", on Linux yields an empty line
 ifeq ($(shell echo ""),)
-# This is probably a proper system, so we can use uname
-DELETE=rm -rf
-FLASH_TOOL=client/flasher
-platform=$(shell uname)
-ifneq (,$(findstring MINGW,$(platform)))
-FLASH_PORT=com3
-PATHSEP=\\#
+  # This is probably a proper system, so we can use uname
+  DELETE=rm -rf
+  FLASH_TOOL=client/flasher
+  platform=$(shell uname)
+  ifneq (,$(findstring MINGW,$(platform)))
+    FLASH_PORT=com3
+    PATHSEP=\\#
+  else
+    FLASH_PORT=/dev/ttyACM0
+    PATHSEP=/
+  endif
 else
-FLASH_PORT=/dev/ttyACM0
-PATHSEP=/
-endif
-else
-# Assume that we are running on native Windows
-DELETE=del /q
-FLASH_TOOL=client/flasher.exe
-platform=Windows
-FLASH_PORT=com3
-PATHSEP=\\#
+  # Assume that we are running on native Windows
+  DELETE=del /q
+  FLASH_TOOL=client/flasher.exe
+  platform=Windows
+  FLASH_PORT=com3
+  PATHSEP=\\#
 endif
 
 all clean: %: client/% bootrom/% armsrc/% recovery/% mfkey/% nonce2key/%
@@ -44,14 +44,14 @@ FORCE: # Dummy target to force remake in the subdirectories, even if files exist
 help:
 	@echo Multi-OS Makefile, you are running on $(DETECTED_OS)
 	@echo Possible targets:
-	@echo +	all           - Make bootrom, armsrc and the OS-specific host directory
+	@echo + all           - Make bootrom, armsrc and the OS-specific host directory
 	@echo + client        - Make only the OS-specific host directory
 	@echo + flash-bootrom - Make bootrom and flash it
 	@echo + flash-os      - Make armsrc and flash os \(includes fpga\)
 	@echo + flash-all     - Make bootrom and armsrc and flash bootrom and os image
 	@echo + mfkey         - Make tools/mfkey
 	@echo + nounce2key    - Make tools/nounce2key
-	@echo +	clean         - Clean in bootrom, armsrc and the OS-specific host directory
+	@echo + clean         - Clean in bootrom, armsrc and the OS-specific host directory
 
 client: client/all
 
@@ -89,7 +89,7 @@ endif
 print-%: ; @echo $* = $($*)
 
 style:
-	find . \( -name "*.[ch]" -or -name "*.cpp" -or -name "*.lua" \) -exec perl -pi -e 's/[ \t\r]+$$//' {} \;
+	find . \( -name "*.[ch]" -or -name "*.cpp" -or -name "*.lua" -or -name "Makefile" \) -exec perl -pi -e 's/[ \t\r]+$$//' {} \;
 	find . \( -name "*.[ch]" -or -name "*.cpp" \) -exec astyle --formatted --mode=c --suffix=none \
 	    --indent=spaces=4 --indent-switches --indent-preprocessor \
 	    --keep-one-line-blocks --max-instatement-indent=60 \