regres: Automatically build dEQP based on new config file

tests/regres/deqp-patches/deqp-x11.patch

+diff --git a/.gitignore b/.gitignore
+index d6c5c502b..d22bff565 100644
+--- a/.gitignore
++++ b/.gitignore
+@@ -8,3 +8,4 @@
+ !.editorconfig
+ !.travis.yml
+ !.github
++/build/
+\ No newline at end of file
+diff --git a/framework/platform/lnx/X11/tcuLnxX11.cpp b/framework/platform/lnx/X11/tcuLnxX11.cpp
+index dfe09d060..b4493e431 100644
+--- a/framework/platform/lnx/X11/tcuLnxX11.cpp
++++ b/framework/platform/lnx/X11/tcuLnxX11.cpp
+@@ -24,6 +24,7 @@
+ #include "tcuLnxX11.hpp"
+ #include "gluRenderConfig.hpp"
+ #include "deMemory.h"
++#include "deThread.hpp"
+ 
+ #include <X11/Xutil.h>
+ 
+@@ -80,10 +81,14 @@ XlibDisplay::XlibDisplay (EventState& eventState, const char* name)
+ 	//     a multi-threaded program calls, and it must complete before any other
+ 	//     Xlib call is made.
+ 	DE_CHECK_RUNTIME_ERR(XInitThreads() != 0);
+-	m_display = XOpenDisplay((char*)name); // Won't modify argument string.
++	for (int i = 0; i < 10; i++) {
++		m_display = XOpenDisplay((char*)name); // Won't modify argument string.
++		if (m_display)
++			break;
++		deSleep(100*(1+i));
++	}
+ 	if (!m_display)
+ 		throw ResourceError("Failed to open display", name, __FILE__, __LINE__);
+-
+ 	m_deleteAtom	= XInternAtom(m_display, "WM_DELETE_WINDOW", False);
+ }
+ 

tests/regres/deqp.json

+{
+    "remote": "git@gitlab.khronos.org:Tracker/vk-gl-cts.git",
+    "sha": "76a2b81e0ca86a65a927892ee4340bc6685e86b3",
+    "patches": [
+        "tests/regres/deqp-patches/deqp-x11.patch"
+    ]
+}
\ No newline at end of file

tests/regres/git/git.go

@@ -120,7 +120,7 @@ func Checkout(path, url string, commit Hash) error {
 	for _, cmds := range [][]string{
 		{"init"},
 		{"remote", "add", "origin", url},
-		{"fetch", "origin", commit.String()},
+		{"fetch", "origin", "--depth=1", commit.String()},
 		{"checkout", commit.String()},
 	} {
 		if err := shell.Shell(gitTimeout, exe, path, cmds...); err != nil {
@@ -132,6 +132,11 @@ func Checkout(path, url string, commit Hash) error {
 	return nil
 }
 
+// Apply applys the patch file to the git repo at dir.
+func Apply(dir, patch string) error {
+	return shell.Shell(gitTimeout, exe, dir, "apply", patch)
+}
+
 // FetchRefHash returns the git hash of the given ref.
 func FetchRefHash(ref, url string) (Hash, error) {
 	out, err := shell.Exec(gitTimeout, exe, "", nil, "ls-remote", url, ref)

tests/regres/testlist/testlist.go

@@ -84,9 +84,7 @@ func (l Lists) Hash() string {
 	if err := gob.NewEncoder(h).Encode(l); err != nil {
 		panic(cause.Wrap(err, "Could not encode testlist to produce hash"))
 	}
-	var hash [20]byte
-	copy(hash[:], h.Sum(nil))
-	return hex.EncodeToString(hash[:])
+	return hex.EncodeToString(h.Sum(nil))
 }
 
 // Load loads the test list json file and returns the full set of tests.