Replaced BP_MASTER and BP_SLAVE with inclusive terminology

[Buzz-Lightyear]

BP_MASTER -> BLUEPILL_BINARY BP_SLAVE -> BP_BINARY

Build Succeeds locally:

RegisterExecutionPolicyException /Users/smuthu/Sandbox/bluepill/build/Build/Products/Release/bluepill (in target 'bluepill' from project 'bluepill')
    cd /Users/smuthu/Sandbox/bluepill/bluepill
    builtin-RegisterExecutionPolicyException /Users/smuthu/Sandbox/bluepill/build/Build/Products/Release/bluepill

** BUILD SUCCEEDED **

Release in build/Bluepill-v5.6.0-2-gabe80d2.zip
precmd: command not found: vcs_info 

However there are test failures (although they mirror the failures in master):

Failing tests:
        bp-tests:
                -[BPUtilsTests testNormalizingConfigurationDoesntExcludeTestSuiteWithSimilarPrefix]
                -[BPUtilsTests testNormalizingConfigurationOnlyIncludesTestsInIncludedTestSuite]
                -[BluepillTests testAppThatCrashesOnLaunch]
                -[BluepillTests testAppThatHangsOnLaunch]
                -[BluepillTests testCopySimulatorPreferencesFile]
                -[BluepillTests testDeleteSimulatorNotExistWithRetry]
                -[BluepillTests testDeleteSimulatorOnly]
                -[BluepillTests testKeepSimulatorWithAppCrashingTestsSet]
                -[BluepillTests testKeepSimulatorWithAppHangingTestsSet]
                -[BluepillTests testNoRetryOnCrash]
                -[BluepillTests testRecoverSimulatorOnCrash]
                -[BluepillTests testRetryOnlyFailures]
                -[BluepillTests testRunningAndIgnoringCertainTestCases]
                -[BluepillTests testRunningOnlyCertainTestcases]
                -[BluepillTests testRunScript]
                -[BluepillTests testRunUITest]
                -[BluepillTests testRunWithFailingTestsSet]
                -[BluepillTests testRunWithPassingTestsSet]
                -[BluepillTests testThatScreenshotAreNotTakenWithFailingTestsSetWithoutConfigOption]