OrderedUseFixer should be case-insensitive
bug #752 OrderedUseFixer should be case-insensitive (rusitschka)

This PR was squashed before being merged into the 1.2-dev branch (closes #752).

Discussion
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OrderedUseFixer should be case-insensitive

The pre 1.0 version of php-cs-fixer and IDEs, e.g. IntelliJ IDEA, order the use statements independant of their case. The OrderedUseFixer was ignoring the case. With version 1.1 the case is not ignored resulting in the wrong sort order. This change fixes that. Please review and merge.

Commits
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bdb2707 OrderedUseFixer should be case-insensitive