Use RocketBootstrap headers/lib from theos/vendor

[coolstar]

theos ships with rocketbootstrap headers and a tbd, so we don't need to have it in the common folder anymore.

[mwoolweaver]

not sure where the #import/#include statement should go to make it work but this should be the path to rocketbootstrap.h via theos as described here

$(THEOS_VENDOR_INCLUDE_PATH)/rocketbootstrap/rocketbootstrap.h

also the tbd for rocketbootstrap but again i don't really know where to #include/#import to make it work

$(THEOS_VENDOR_LIBRARY_PATH)/rocketbootstrap.tbd

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OT: are the () needed around THEOS_VENDOR_******_PATH when used in #include/#import statements noticed them in Anemone's make file so I wasn't sure.

after all that it was too simple. . . #8

[mwoolweaver]

This should be closed, right? 93cf114 provides the fix.