re-import sources as agreed with the maintainer

.gitignore

@@ -1 +1 @@
-/ceres-solver-1.13.0.tar.gz
+/ceres-solver-*.tar.gz

ceres-solver-1.11.0-cmakedir.patch

@@ -0,0 +1,21 @@
+diff -up ./CMakeLists.txt.cmakedir ./CMakeLists.txt
+--- ./CMakeLists.txt.cmakedir	2015-10-11 16:57:44.000000000 -0400
++++ ./CMakeLists.txt	2016-02-14 11:01:38.328344701 -0500
+@@ -632,7 +632,7 @@ endif (MSVC)
+ if (UNIX)
+   # GCC is not strict enough by default, so enable most of the warnings.
+   set(CMAKE_CXX_FLAGS
+-    "${CMAKE_CXX_FLAGS} -Werror=all -Werror=extra -Wno-unknown-pragmas -Wno-sign-compare -Wno-unused-parameter -Wno-missing-field-initializers")
++    "${CMAKE_CXX_FLAGS} -Wno-unknown-pragmas -Wno-sign-compare -Wno-unused-parameter -Wno-missing-field-initializers")
+ endif (UNIX)
+ 
+ # Use a larger inlining threshold for Clang, since it hobbles Eigen,
+@@ -762,7 +762,7 @@ configure_file("${CMAKE_SOURCE_DIR}/cmak
+ if (WIN32)
+   set(RELATIVE_CMAKECONFIG_INSTALL_DIR CMake)
+ else ()
+-  set(RELATIVE_CMAKECONFIG_INSTALL_DIR share/Ceres)
++  set(RELATIVE_CMAKECONFIG_INSTALL_DIR lib${LIB_SUFFIX}/cmake/Ceres)
+ endif ()
+ 
+ # This "exports" for installation all targets which have been put into the