GL: don't need to include StaticArray in Context.h.

Have just a C array, the only hurdle is C++ being shitty when copying
those.

src/Magnum/GL/Context.cpp

@@ -31,6 +31,7 @@
 #include <Corrade/Containers/GrowableArray.h>
 #include <Corrade/Containers/Reference.h>
 #include <Corrade/Containers/StringIterable.h>
+#include <Corrade/Utility/Algorithms.h>
 #include <Corrade/Utility/Arguments.h>
 #include <Corrade/Utility/Debug.h>
 #include <Corrade/Utility/Macros.h> /* CORRADE_THREAD_LOCAL */
@@ -832,7 +833,6 @@ Context::Context(Context&& other) noexcept:
     _flags{other._flags},
     #endif
     _extensionStatus{other._extensionStatus},
-    _extensionRequiredVersion{other._extensionRequiredVersion},
     #ifdef MAGNUM_BUILD_DEPRECATED
     _supportedExtensions{Utility::move(other._supportedExtensions)},
     #endif
@@ -842,6 +842,7 @@ Context::Context(Context&& other) noexcept:
     _disabledExtensions{Utility::move(other._disabledExtensions)},
     _configurationFlags{other._configurationFlags}
 {
+    Utility::copy(other._extensionRequiredVersion, _extensionRequiredVersion);
     if(currentContext == &other) currentContext = this;
 }
 

src/Magnum/GL/Context.h

@@ -35,7 +35,6 @@
 #include <Corrade/Containers/ArrayTuple.h>
 #include <Corrade/Containers/EnumSet.h>
 #include <Corrade/Containers/Optional.h>
-#include <Corrade/Containers/StaticArray.h>
 
 #include "Magnum/Magnum.h"
 #include "Magnum/Math/BitVector.h"
@@ -921,7 +920,7 @@ class MAGNUM_GL_EXPORT Context {
         /* For all extensions that are marked as supported in _extensionStatus,
            this field contains the minimal required GL version the extension
            needs. Extensions that are disabled have None here. */
-        Containers::StaticArray<Implementation::ExtensionCount, Version> _extensionRequiredVersion;
+        Version _extensionRequiredVersion[Implementation::ExtensionCount];
         #ifdef MAGNUM_BUILD_DEPRECATED
         Containers::Array<Extension> _supportedExtensions;
         #endif