Replace PCRE with PCRE2 build dependencies

Now that libselinux defaults to PCRE2 and mcstrans has been ported,
update all documentation and scripts.

Signed-off-by: Christian Göttsche <cgzones@googlemail.com>

.circleci/config.yml

@@ -13,7 +13,7 @@ jobs:
 
     # Install dependencies
     - run: sudo apt-get update -qq
-    - run: sudo apt-get install -qq bison clang clang-tools flex gawk gettext libaudit-dev libcap-dev libcap-ng-dev libcunit1-dev libdbus-glib-1-dev libpcre3-dev python3-dev python-dev ruby-dev swig xmlto
+    - run: sudo apt-get install -qq bison clang clang-tools flex gawk gettext libaudit-dev libcap-dev libcap-ng-dev libcunit1-dev libdbus-glib-1-dev libpcre2-dev python3-dev python-dev ruby-dev swig xmlto
 
     - run:
         name: Setup environment variables

.github/workflows/run_tests.yml

@@ -57,7 +57,7 @@ jobs:
             libcap-ng-dev \
             libcunit1-dev \
             libdbus-glib-1-dev \
-            libpcre3-dev \
+            libpcre2-dev \
             python3-dev \
             python-dev \
             ruby-dev \

CONTRIBUTING.md

@@ -26,7 +26,7 @@ using a custom policy please include it as well.
 There are a number of dependencies required to build the userspace
 tools/libraries. On a Fedora system you can install them with yum:
 
-    # yum install audit-libs-devel bison bzip2-devel dbus-devel dbus-glib-devel flex flex-devel flex-static glib2-devel libcap-devel libcap-ng-devel pam-devel pcre-devel python-devel setools-devel swig ustr-devel
+    # yum install audit-libs-devel bison bzip2-devel dbus-devel dbus-glib-devel flex flex-devel flex-static glib2-devel libcap-devel libcap-ng-devel pam-devel pcre2-devel python-devel setools-devel swig ustr-devel
 
 The tools and libraries can be built and installed under a private directory from the top level with make, e.g.
 

README.md

@@ -51,7 +51,7 @@ dnf install \
     libcap-devel \
     libcap-ng-devel \
     pam-devel \
-    pcre-devel \
+    pcre2-devel \
     xmlto
 
 # For Python and Ruby bindings
@@ -78,7 +78,7 @@ apt-get install --no-install-recommends --no-install-suggests \
     libcap-ng-dev \
     libcunit1-dev \
     libglib2.0-dev \
-    libpcre3-dev \
+    libpcre2-dev \
     pkgconf \
     python3 \
     python3-distutils \

scripts/ci/fedora-test-runner.sh

@@ -36,7 +36,7 @@ dnf install -y \
     libcap-devel \
     libcap-ng-devel \
     pam-devel \
-    pcre-devel \
+    pcre2-devel \
     xmlto \
     python3-devel \
     ruby-devel \