Force inlining Correction::isSingleQuote

Also, only apply -Winline with GCC 4.6. There are some copy constructors
that GCC 4.7/4.8 fail to inline.

Change-Id: I97906045224e89377e8ea6add07a79fa088648af

native/jni/Android.mk

@@ -32,7 +32,7 @@ LOCAL_CFLAGS += -Werror -Wall -Wextra -Weffc++ -Wformat=2 -Wcast-qual -Wcast-ali
     -Wwrite-strings -Wfloat-equal -Wpointer-arith -Winit-self -Wredundant-decls -Wno-system-headers
 
 ifeq ($(TARGET_ARCH), arm)
-ifneq ($(TARGET_GCC_VERSION), 4.7)
+ifeq ($(TARGET_GCC_VERSION), 4.6)
 LOCAL_CFLAGS += -Winline
 endif # TARGET_GCC_VERSION
 endif # TARGET_ARCH

native/jni/src/correction.h

@@ -307,7 +307,7 @@ inline void Correction::startToTraverseAllNodes() {
     mNeedsToTraverseAllNodes = true;
 }
 
-inline bool Correction::isSingleQuote(const int c) {
+AK_FORCE_INLINE bool Correction::isSingleQuote(const int c) {
     const int userTypedChar = mProximityInfoState.getPrimaryCodePointAt(mInputIndex);
     return (c == KEYCODE_SINGLE_QUOTE && userTypedChar != KEYCODE_SINGLE_QUOTE);
 }