configure: Support Apple Xcode 5.0 and iOS 7.0

Not tested on the 64-bit ARMv8 architecture, although it should be
compatible (confirmation would be welcome).

configure/os/CONFIG_SITE.Common.ios-arm

@@ -16,11 +16,16 @@
 #
 #   Xcode 4.5 dropped support for the ARMv6.
 #
-#   ARMv7s devices: iPhone 5
+#   ARMv8 (arm64) devices: iPhone 5S
+#   ARMv7s devices: iPhone 5 and 5C, iPad Gen 4
+#   ARMv7 devices: iPhone 3GS, 4 and 4S, iPod Touch Gen 3 to 5
+#                  iPad Gen 1 to 3, iPad Mini, Apple TV Gen 2 and 3
 #   ARMv6 devices: iPhone 1 and 3G, iPod Touch Gen 1 and 2
-#   All other devices are ARMv7
 
-ARCH_CLASS = armv7 armv7s
+#ARCH_CLASS = arm64
+#ARCH_CLASS = armv7s arm64
+ARCH_CLASS = armv7 armv7s arm64
+#ARCH_CLASS = armv7 armv7s
 #ARCH_CLASS = armv7
 #ARCH_CLASS = armv6 armv7
 #ARCH_CLASS = armv6

configure/os/CONFIG_SITE.Common.iosCommon

@@ -14,11 +14,12 @@
 #IOS_VERSION = 5.0
 #IOS_VERSION = 5.1
 #IOS_VERSION = 6.0
-IOS_VERSION = 6.1
+#IOS_VERSION = 6.1
+IOS_VERSION = 7.0
 
 
 # Which compiler to use:
-#   CLANG is preferred for recent versions of Xcode
+#   CLANG is required for Xcode 5.0 and later
 #   LLVM_GNU uses the llvm-gcc and llvm-g++ compilers
 #   GNU is needed for older versions of Xcode
 

documentation/RELEASE_NOTES.html

@@ -13,6 +13,11 @@
 
 <!-- Insert new items immediately below here ... -->
 
+<h3>Support for Apple Xcode 5.0</h3>
+
+<p>This adds the ability to build for iOS 7.0 and the ARMv8 64-bit CPU on the
+newest iPhone 5S device.</p>
+
 <h3>Reading TSEL field</h3>
 
 <p>The TSEL link field has two complementary uses; it is read to fetch a