disable cotire as it's deprecated and breaks the build with newer libc++

Index: CMakeLists.txt
--- CMakeLists.txt.orig
+++ CMakeLists.txt
@@ -15,11 +15,6 @@ set(lucene++_VERSION
 # include specific modules
 set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
 
-####################################
-# pre-compiled headers support
-####################################
-include(cotire)
-
 # if setup using the Toolchain-llvm.cmake file, then use llvm...
 if(ENABLE_LLVM)
   include(Toolchain-llvm)
@@ -85,7 +80,7 @@ include(TestCXXAcceptsFlag)
 include(GNUInstallDirs)
 
 set(LIB_DESTINATION
-  "${CMAKE_INSTALL_FULL_LIBDIR}" CACHE STRING "Define lib output directory name"
+  "lib" CACHE STRING "Define lib output directory name"
 )
 
 if(ENABLE_CYCLIC_CHECK)