cmake: rename new packages and module introduced in #95 and #96

[ryanofsky]

Rename "LibmultiprocessMacros.cmake" module introduced in #95 to "TargetCapnpSources.cmake" to match the name of the target_capnp_sources function it contains. Also install it to:

  <prefix>/lib/cmake/Libmultiprocess/TargetCapnpSources.cmake

instead of:

  <prefix>/lib/cmake/LibmultiprocessGen/LibmultiprocessMacros.cmake

Rename the "Libmultiprocess" and "LibmultiprocessGen" packages introduced in #96 to "LibmultiprocessLib" and "LibmultiprocessBin", so package names are consistent with component names "lib" and "bin", and one package name is not a prefix of the other. Also rename intermediate files to match component names.

	New	Current
Component name	lib	lib
Package name	LibmultiprocessLib	Libmultiprocess
Config file	LibmultiprocessLibConfig.cmake	Libmultiprocess/LibmultiprocessConfig.cmake
Targets file	Libmultiprocess/LibTargets.cmake	Libmultiprocess/LibmultiprocessTargets.cmake

	New	Current
Component name	bin	bin
Package name	LibmultiprocessBin	LibmultiprocessGen
Config file	LibmultiprocessBinConfig.cmake	LibmultiprocessGen/LibmultiprocessGenConfig.cmake
Targets file	Libmultiprocess/BinTargets.cmake	LibmultiprocessGen/LibmultiprocessGenTargets.cmake

[hebasto]

After the following commands:

$ cmake -B build -DCMAKE_INSTALL_PREFIX=/home/hebasto/INSTALL
$ cmake --build build
$ cmake --install build

I have the following installation lib subdirectory structure:

$ tree /home/hebasto/INSTALL
/home/hebasto/INSTALL
├── bin
│   └── mpgen
├── include
│   ├── mp
│   │   ├── proxy.capnp
│   │   ├── proxy.capnp.h
│   │   ├── proxy.h
│   │   ├── proxy-io.h
│   │   ├── proxy-types.h
│   │   └── util.h
│   └── mpgen.mk
└── lib
    ├── cmake
    │   ├── Libmultiprocess
    │   │   ├── BinTargets.cmake
    │   │   ├── BinTargets-noconfig.cmake
    │   │   ├── LibTargets.cmake
    │   │   ├── LibTargets-noconfig.cmake
    │   │   └── TargetCapnpSources.cmake
    │   ├── LibmultiprocessBinConfig.cmake
    │   └── LibmultiprocessLibConfig.cmake
    ├── libmultiprocess.a
    └── pkgconfig
        └── libmultiprocess.pc

7 directories, 17 files

A downstream project being provided with set(CMAKE_FIND_ROOT_PATH /home/hebasto/INSTALL) will fail to find LibmultiprocessBin and LibmultiprocessLib packages with the usual find_package() command due to its search procedure described in the docs.

In short, paths like <prefix>/lib/cmake/<PackageName>Config.cmake are not considered at all.

[ryanofsky]

Thanks for catching this. I accidentally replied to the wrong issue earlier in #95 (comment). I posted an update in #98 which should fix this, but if there's any problem just let me know.