allow pretification of code (not qemu's)

.clang-format

@@ -0,0 +1,59 @@
+---
+Language: Cpp
+ColumnLimit: 140
+IndentWidth: 4
+PPIndentWidth: 2
+UseTab: Never
+
+AlignArrayOfStructures: Left
+
+IndentCaseBlocks: true
+IndentCaseLabels: true
+IndentGotoLabels: false
+IndentPPDirectives: AfterHash
+IndentWrappedFunctionNames: true
+
+InsertBraces: false
+InsertNewlineAtEOF: true
+
+MaxEmptyLinesToKeep: 1
+
+PointerAlignment: Left
+ReferenceAlignment: Left
+QualifierAlignment: Left
+
+SortIncludes: false
+
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeParens: ControlStatements
+SpaceBeforeRangeBasedForLoopColon: true
+SpaceInEmptyParentheses: false
+SpacesInAngles: true
+SpacesInCStyleCastParentheses: true
+SpacesInContainerLiterals: true
+SpacesInParentheses: true
+SpacesInSquareBrackets: true
+SpaceAfterCStyleCast: false
+SpaceAfterLogicalNot: false
+
+BreakBeforeBraces: Custom
+BraceWrapping:
+  AfterCaseLabel:  false
+  AfterClass:      false
+  AfterControlStatement: Never
+  AfterEnum:       false
+  AfterExternBlock: false
+  AfterFunction:   true
+  AfterNamespace:  false
+  AfterObjCDeclaration: false
+  AfterStruct:     false
+  AfterUnion:      false
+  BeforeCatch:     false
+  BeforeElse:      false
+  BeforeLambdaBody: false
+  BeforeWhile:     false
+  IndentBraces:    false
+  SplitEmptyFunction: true
+  SplitEmptyRecord: true
+  SplitEmptyNamespace: true
+...

Makefile

@@ -195,4 +195,7 @@ depend-and-build: depend
 depend: depend-libs
 	$(MAKEDEPEND) $(CFLAGS) $(X49GP_CFLAGS) $(SRCS) >.depend
 
+pretty-code:
+	clang-format -i *.c *.h
+
 dummy: