Use BetterReflection (#117)

Remove the concept of global whitelisted classes in favour of prefixing the class based on whether or not it is internal.

A couple of additional fixes:

- When no namespace is found a namespace is added ensuring no code remains in the global namespace
- Fix the handling of grouped use statements: the technique applied was not working when using grouped use statements with multiple namespaces

Author: theofidry

Makefile

@@ -62,7 +62,7 @@ e2e: e2e_004 e2e_005 e2e_011 e2e_013 e2e_014 e2e_015
 
 e2e_004:	## Run end-to-end tests for the fixture set 004: source code case
 e2e_004: bin/php-scoper.phar
-	php -d zend.enable_gc=0 $(PHPSCOPER) add-prefix --working-dir=fixtures/set004 --output-dir=../../build/set004 --force --no-config --no-interaction
+	php -d zend.enable_gc=0 $(PHPSCOPER) add-prefix --working-dir=fixtures/set004 --output-dir=../../build/set004 --force --no-config --no-interaction --stop-on-failure
 	composer --working-dir=build/set004 dump-autoload
 	php -d zend.enable_gc=0 -d phar.readonly=0 $(BOX) build -c build/set004/box.json.dist
 
@@ -71,7 +71,7 @@ e2e_004: bin/php-scoper.phar
 
 e2e_005:	## Run end-to-end tests for the fixture set 005: third-party code case
 e2e_005: bin/php-scoper.phar fixtures/set005/vendor
-	php -d zend.enable_gc=0 $(PHPSCOPER) add-prefix --working-dir=fixtures/set005 --output-dir=../../build/set005 --force --no-config --no-interaction
+	php -d zend.enable_gc=0 $(PHPSCOPER) add-prefix --working-dir=fixtures/set005 --output-dir=../../build/set005 --force --no-config --no-interaction --stop-on-failure
 	composer --working-dir=build/set005 dump-autoload
 	php -d zend.enable_gc=0 -d phar.readonly=0 $(BOX) build -c build/set005/box.json.dist
 
@@ -80,7 +80,7 @@ e2e_005: bin/php-scoper.phar fixtures/set005/vendor
 
 e2e_011:	## Run end-to-end tests for the fixture set 011: whitelist case
 e2e_011: bin/php-scoper.phar fixtures/set011/vendor
-	php -d zend.enable_gc=0 $(PHPSCOPER) add-prefix --working-dir=fixtures/set011 --output-dir=../../build/set011 --force --no-interaction
+	php -d zend.enable_gc=0 $(PHPSCOPER) add-prefix --working-dir=fixtures/set011 --output-dir=../../build/set011 --force --no-interaction --stop-on-failure
 	cp -R fixtures/set011/tests build/set011/
 	composer --working-dir=build/set011 dump-autoload
 	php -d zend.enable_gc=0 -d phar.readonly=0 $(BOX) build -c build/set011/box.json.dist
@@ -97,7 +97,7 @@ e2e_013: bin/php-scoper.phar
 
 e2e_014:	## Run end-to-end tests for the fixture set 014: source code case with psr-0
 e2e_014: bin/php-scoper.phar
-	php -d zend.enable_gc=0 $(PHPSCOPER) add-prefix --working-dir=fixtures/set014 --output-dir=../../build/set014 --force --no-config --no-interaction
+	php -d zend.enable_gc=0 $(PHPSCOPER) add-prefix --working-dir=fixtures/set014 --output-dir=../../build/set014 --force --no-config --no-interaction --stop-on-failure
 	composer --working-dir=build/set014 dump-autoload
 	php -d zend.enable_gc=0 -d phar.readonly=0 $(BOX) build -c build/set014/box.json.dist
 
@@ -106,7 +106,7 @@ e2e_014: bin/php-scoper.phar
 
 e2e_015:	## Run end-to-end tests for the fixture set 015: third-party code case with psr-0
 e2e_015: bin/php-scoper.phar fixtures/set015/vendor
-	php -d zend.enable_gc=0 $(PHPSCOPER) add-prefix --working-dir=fixtures/set015 --output-dir=../../build/set015 --force --no-config --no-interaction
+	php -d zend.enable_gc=0 $(PHPSCOPER) add-prefix --working-dir=fixtures/set015 --output-dir=../../build/set015 --force --no-config --no-interaction --stop-on-failure
 	composer --working-dir=build/set015 dump-autoload
 	php -d zend.enable_gc=0 -d phar.readonly=0 $(BOX) build -c build/set015/box.json.dist
 

composer.json

@@ -23,9 +23,10 @@
         "nikic/php-parser": "^3.0",
         "ocramius/package-versions": "^1.1",
         "padraic/phar-updater": "^1.0",
-        "symfony/console": "^3.2|^4.0",
-        "symfony/filesystem": "^3.2|^4.0",
-        "symfony/finder": "^3.2|^4.0",
+        "roave/better-reflection": "^2.0",
+        "symfony/console": "^3.2 || ^4.0",
+        "symfony/filesystem": "^3.2 || ^4.0",
+        "symfony/finder": "^3.2 || ^4.0",
         "symfony/requirements-checker": "^1.0"
     },
     "require-dev": {