64-bit compile fails due to unknown z_crc_t type

[kcozens]

I tried to build OnLook from git but the compile failed complaining that it didn't know the type z_crc_t. I searched the net about this error and found a reference to this from another project. It suggested removing zconf.h from the source tree. I found the file existed in the OnLook source tree. I renamed the file so it couldn't be found and the next build attempt succeeded.

I was doing a compile of OnLook under Linux Mint 17.2 64-bit for a 64-bit target. The zconf.h file include in the OnLook source tree needs to be updated or removed.