Fixed Xcode 10.1 warning by setting project setting 'ALWAYS_SEARCH_USER_PATHS = NO'

The warning was: "Traditional headermap style is no longer supported; please migrate to using separate headermaps and set 'ALWAYS_SEARCH_USER_PATHS' to NO."

Also made sure all targets are referencing the xcconfig files.

Closes #532

Signed-off-by: Nathan Hjelm <hjelmn@me.com>

Xcode/common.xcconfig

diff --git a/Xcode/common.xcconfig b/Xcode/common.xcconfig
index bb97789..2c7ff3c 100644
--- a/Xcode/common.xcconfig
+++ b/Xcode/common.xcconfig
@@ -23,6 +23,9 @@
 // Use C99 dialect.
 GCC_C_LANGUAGE_STANDARD = c99
 
+// Don't search user paths with <> style #includes.
+ALWAYS_SEARCH_USER_PATHS = NO
+
 // Compiler warnings.
 GCC_WARN_64_TO_32_BIT_CONVERSION = YES
 GCC_WARN_ABOUT_RETURN_TYPE = YES

Xcode/libusb.xcodeproj/project.pbxproj

diff --git a/Xcode/libusb.xcodeproj/project.pbxproj b/Xcode/libusb.xcodeproj/project.pbxproj
index 1d11cf8..25dfd64 100644
--- a/Xcode/libusb.xcodeproj/project.pbxproj
+++ b/Xcode/libusb.xcodeproj/project.pbxproj
@@ -734,6 +734,7 @@
 /* Begin XCBuildConfiguration section */
 		006AD4201C8C5A90007F8C6A /* Debug */ = {
 			isa = XCBuildConfiguration;
+			baseConfigurationReference = 1443EE8516417E63007E0579 /* debug.xcconfig */;
 			buildSettings = {
 				PRODUCT_NAME = "$(TARGET_NAME)";
 			};
@@ -741,6 +742,7 @@
 		};
 		006AD4211C8C5A90007F8C6A /* Release */ = {
 			isa = XCBuildConfiguration;
+			baseConfigurationReference = 1443EE8816417E63007E0579 /* release.xcconfig */;
 			buildSettings = {
 				PRODUCT_NAME = "$(TARGET_NAME)";
 			};
@@ -748,12 +750,14 @@
 		};
 		008FBF331628B79300BC5BE2 /* Debug */ = {
 			isa = XCBuildConfiguration;
+			baseConfigurationReference = 1443EE8516417E63007E0579 /* debug.xcconfig */;
 			buildSettings = {
 			};
 			name = Debug;
 		};
 		008FBF341628B79300BC5BE2 /* Release */ = {
 			isa = XCBuildConfiguration;
+			baseConfigurationReference = 1443EE8816417E63007E0579 /* release.xcconfig */;
 			buildSettings = {
 			};
 			name = Release;

libusb/version_nano.h

diff --git a/libusb/version_nano.h b/libusb/version_nano.h
index 0d6bc45..bc7fc4e 100644
--- a/libusb/version_nano.h
+++ b/libusb/version_nano.h
@@ -1 +1 @@
-#define LIBUSB_NANO 11349
+#define LIBUSB_NANO 11350