Fix debugserver build breakage on Mavericks after lldb commit svn 240728
Fix debugserver build breakage on Mavericks after lldb commit svn 240728

vm_kernel_page_size appears to not be defined on OSX Mavericks, so the
build fails.  This patch fixes the build by calculating the pagesize if
_VM_PAGE_SIZE_H_ is not defined.


git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@242114 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lldb,llvm-mirror/lldb,llvm-mirror/lldb,llvm-mirror/lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb,apple/swift-lldb