libdrm: Use relative folders for directories

Use relative folders due to this change: conan-io/conan#15706.
Bump Meson to 1.4.0.

recipes/libdrm/all/conanfile.py

@@ -9,7 +9,7 @@
 from conan.tools.meson import MesonToolchain, Meson
 from conan.tools.scm import Version
 
-required_conan_version = ">=1.53.0"
+required_conan_version = ">=1.64.0 <2 || >=2.2.0"
 
 
 class LibdrmConan(ConanFile):
@@ -88,7 +88,7 @@ def validate(self):
             raise ConanInvalidConfiguration("libdrm supports only Linux or FreeBSD")
 
     def build_requirements(self):
-        self.tool_requires("meson/1.3.0")
+        self.tool_requires("meson/1.4.0")
         if not self.conf.get("tools.gnu:pkg_config", default=False, check_type=str):
             self.tool_requires("pkgconf/2.1.0")
 
@@ -116,8 +116,8 @@ def generate(self):
             else:
                 tc.project_options[o] = "true" if getattr(self.options, o) else "false"
 
-        tc.project_options["datadir"] = os.path.join(self.package_folder, "res")
-        tc.project_options["mandir"] = os.path.join(self.package_folder, "res", "man")
+        tc.project_options["datadir"] = "res"
+        tc.project_options["mandir"] = os.path.join("res", "man")
         tc.generate()
 
     def build(self):