[ios, macos] Update minimum deployment versions to iOS 9, macOS 10.11 (#11776)

* [ios] Remove iOS 8 conditionals

* [ios, macos] Bump pod deployment targets

* [ios, macos] Add changelog entries

* [ios, macos] Update docs

* Remove unnecessary selector-based version checks

* Update SQLite note

* [ios, macos] Replace lightweight generics macros with direct use
   Lightweight generics for Foundation collections are available everywhere with the bump to iOS 9 and macOS 10.11.

* Update deprecated macOS method

1 files changed, 12 insertions, 21 deletions

diff --git a/platform/darwin/src/NSString+MGLAdditions.m b/platform/darwin/src/NSString+MGLAdditions.m
index a61f229511..d645490eb3 100644
--- a/platform/darwin/src/NSString+MGLAdditions.m
+++ b/platform/darwin/src/NSString+MGLAdditions.m
@@ -17,14 +17,9 @@
 - (NSString *)mgl_titleCasedStringWithLocale:(NSLocale *)locale {
     NSMutableString *string = self.mutableCopy;
     NSOrthography *orthography;
-#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000 || __MAC_OS_X_VERSION_MAX_ALLOWED >= 101300
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wunguarded-availability-new"
-    if ([NSOrthography respondsToSelector:@selector(defaultOrthographyForLanguage:)]) {
+    if (@available(iOS 11.0, macOS 10.13.0, *)) {
         orthography = [NSOrthography defaultOrthographyForLanguage:locale.localeIdentifier];
     }
-#pragma clang diagnostic pop
-#endif
     [string enumerateLinguisticTagsInRange:string.mgl_wholeRange scheme:NSLinguisticTagSchemeLexicalClass options:0 orthography:orthography usingBlock:^(NSString * _Nonnull tag, NSRange tokenRange, NSRange sentenceRange, BOOL * _Nonnull stop) {
         NSString *word = [string substringWithRange:tokenRange];
         if (word.length > 3
@@ -46,22 +41,18 @@
 }
 
 - (NSString *)mgl_stringByTransliteratingIntoScript:(NSString *)script {
-    if (@available(iOS 9.0, *)) {
-        NSMutableString *string = self.mutableCopy;
-        NSStringTransform transform;
-        if ([script isEqualToString:@"Latn"]) {
-            transform = NSStringTransformToLatin;
-        } else if ([script isEqualToString:@"Hans"]) {
-            // No transform available.
-        } else if ([script isEqualToString:@"Cyrl"]) {
-            transform = @"Any-Latin; Latin-Cyrillic";
-        } else if ([script isEqualToString:@"Arab"]) {
-            transform = @"Any-Latin; Latin-Arabic";
-        }
-        return transform ? [string stringByApplyingTransform:transform reverse:NO] : string;
-    } else {
-        return self;
+    NSMutableString *string = self.mutableCopy;
+    NSStringTransform transform;
+    if ([script isEqualToString:@"Latn"]) {
+        transform = NSStringTransformToLatin;
+    } else if ([script isEqualToString:@"Hans"]) {
+        // No transform available.
+    } else if ([script isEqualToString:@"Cyrl"]) {
+        transform = @"Any-Latin; Latin-Cyrillic";
+    } else if ([script isEqualToString:@"Arab"]) {
+        transform = @"Any-Latin; Latin-Arabic";
     }
+    return transform ? [string stringByApplyingTransform:transform reverse:NO] : string;
 }
 
 @end