Initial commit: XRandR connects to the server via XCB.

I really need to start two cheatsheets for this: one for CMake,
and one for XCB.

.gitignore

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+*#
+.#*
+*~
+*.orig
+build/
+xrandr
+cmake_install.cmake
+CMakeCache.txt
+CMakeFiles/
+.ccls-cache/

CMakeLists.txt

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+project("XrandR")
+cmake_minimum_required(VERSION 3.18)
+
+find_package(ECM REQUIRED NO_MODULE)
+list(APPEND CMAKE_MODULE_PATH ${ECM_MODULE_PATH})
+
+find_package(XCB REQUIRED)
+link_libraries(${XCB_LIBRARIES})
+include_directories(${X11_INCLUDE_DIR})
+
+list(APPEND CMAKE_CXX_FLAGS "${CXXMAKE_C_FLAGS} -std=c++17 -I../src/include/ -g")
+
+add_executable(xrandr src/xrandr.cpp)
+
+target_link_libraries(xrandr ${X11_XCB_LIBRARIES})

LICENSE

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+BSD 3-Clause License
+
+Copyright (c) 2016, Ken "Elf" Mathieu Sternberg
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+* Neither the name of the copyright holder nor the names of its
+  contributors may be used to endorse or promote products derived from
+  this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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README.md

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+**WHAT:**
+
+This is an attempt to write a simple iteration of XRandR using XCB and
+C++.
+
+**WHY:**
+
+I'm not familiar enough with this ecosystem to be useful in it, and I
+need to start getting some familiarity with it before I start hacking
+a Rust project that needs XCB/XRandR capability.
+
+**REQURIEMENTS:**
+
+This code has been tested with gcc-7.3, and should work on any
+C++17-compliant compiler with the relevant standard library, and 
+obviously X Windows.
+
+**STATUS:**
+
+In progress.
+
+**DETAILS:**
+
+**BUILDING:**
+
+From the base directory of the project:
+
+    mkdir build
+    cd build
+    cmake ..
+    make
+

src/xrandr.cpp

@@ -0,0 +1,9 @@
+#include <iostream>
+#include <xcb/xcb.h>
+
+int main(int argc, const char *argv[]) {
+  xcb_connection_t *sXRandR11XCBConnection = xcb_connect(nullptr, nullptr);
+  std::cout << sXRandR11XCBConnection << std::endl;
+  xcb_disconnect(sXRandR11XCBConnection);
+  return 0;
+}