doc: Update README.haiku.md for R1/beta5. [skip ci]

Author: infrastation

doc/README.haiku.md

@@ -2,8 +2,7 @@
 
 Haiku R1/beta4 and earlier versions do not support packet capture on the
 loopback interface.  Using this version of libpcap, loopback capture works
-since Haiku revision hrev57585 and is expected to work in Haiku R1/beta5 when
-the latter becomes available.  Packet timestamping and filtering always occur
+since Haiku R1/beta5.  Packet timestamping and filtering always occur
 in userland.  Wireless monitor mode is not supported.  The "any"
 pseudo-interface is not supported.
 [**pcap_set_buffer_size**](https://www.tcpdump.org/manpages/pcap_set_buffer_size.3pcap.html)(3PCAP)
@@ -22,36 +21,19 @@ on Haiku are as follows:
 * `ps_ifdrop` is the number of packets dropped by the network interface (as
   seen via `SIOCGIFSTATS`) since the capture handle became active.
 
-## 64-bit x86 R1/beta4
+## AMD64 R1/beta5
 
-* Autoconf 2.71 works.
+* Autoconf 2.72 works.
 * CMake 3.28.3 works.
-* GCC 13.2.0 works.
-* Clang 12.0.1 works with the latest llvm12_clang-12.0.1-5 version.
+* GCC 13.3.0 works.
+* Clang 18.1.7 works.
 * flex 2.6.4 works.
 * bison 3.8.2 works.
 
 The following command will install respective non-default packages:
 ```
-pkgman install cmake llvm12_clang
+pkgman install cmake llvm18_clang
 ```
 
 For reference, the tests were done using a system installed from
-`haiku-r1beta4-x86_64-anyboot.iso`.
-
-## 32-bit x86 R1/beta4
-
-* Autoconf 2.71 works.
-* CMake 3.24.2 works.
-* GCC 11.2.0 works.
-* Clang does not work.
-* flex 2.6.4 works.
-* bison 3.0.5 works.
-
-The following command will install respective non-default packages:
-```
-pkgman install cmake_x86
-```
-
-For reference, the tests were done using a system installed from
-`haiku-r1beta4-x86_gcc2h-anyboot.iso`.
+`haiku-r1beta5-x86_64-anyboot.iso`.