added errorlog of building on surreypc

tests/population/surreypc_errorlog.txt

@@ -40,3 +40,42 @@ Traceback (most recent call last):
     output=stdout, stderr=stderr)
 subprocess.CalledProcessError: Command 'gcc -DALIGNSIZE=8 -std=gnu99 -march=native -mtune=native -ffast-math -fno-associative-math -fno-finite-math-only -fsignaling-nans -fomit-frame-pointer -DCPUFREQ=3600 -DOPERATING_SYSTEM=linux -DLINUX -DPOSIX -DLARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -DFPU_CONTROL -DGIT_REVISION=4797:20200127:369f3df -DGIT_URL=gitlab@gitlab.eps.surrey.ac.uk:ri0005/binary_c.git -D__HAVE_LIBC__ -D__HAVE_LIBGSL__ -I/user/HS128/dh00601/.local/include -DUSE_GSL -D__HAVE_LIBGSLCBLAS__ -D__HAVE_LIBBACKTRACE__ -D__HAVE_LIBBSD__ -D__HAVE_LIBM__ -D__HAVE_IEEE754_H__ -D__HAVE_DRAND48__ -D__HAVE_HSEARCH_DATA__ -D__HAVE_MALLOC_H__ -D__HAVE_SETITIMER__ -D__HAVE_PKG_CONFIG__ -D__HAVE_VALGRIND__ -D__SHOW_STARDATA__ -D__DIFF_STARDATA__ -O3 -shared -D_SEARCH_H -L/vol/ph/astro_code/dhendriks/binaryc/binary_c/src -L/user/HS128/dh00601/.local/lib -L/vol/ph/astro_code/dhendriks/binaryc/binary_c/src -lbinary_c -lc -lgsl -lgsl -lgslcblas -lm -lgslcblas -lbacktrace -lbsd -lm -o /tmp/binary_c_python/libcustom_logging_db727f25d8e14d4fbeaed42a32f23764.so /tmp/binary_c_python/custom_logging.c -I/vol/ph/astro_code/dhendriks/binaryc/binary_c -I/vol/ph/astro_code/dhendriks/binaryc/binary_c/src -I/usr/include -I/usr/local/include -I/vol/ph/astro_code/dhendriks/binaryc/binary_c/src' returned non-zero exit status 1.
 
+
+
+### 
+https://github.com/pybind/pybind11/issues/1234 might be useful
+
+
+(binaryc_py3.6.4) ➜  population git:(population) ✗ machine_overview 
+System:    Host: phws71 Kernel: 4.4.0-171-generic x86_64 (64 bit gcc: 5.4.0) Desktop: Xfce 4.12.3 (Gtk 2.24.28)
+           Distro: Ubuntu 16.04 xenial
+Machine:   System: Dell product: OptiPlex 7050
+           Mobo: Dell model: 0XHGV1 v: A01 Bios: Dell v: 1.8.3 date: 03/23/2018
+CPU:       Quad core Intel Core i5-6500 (-MCP-) cache: 6144 KB
+           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 25536
+           clock speeds: max: 3600 MHz 1: 864 MHz 2: 881 MHz 3: 863 MHz 4: 849 MHz
+Graphics:  Card: Intel HD Graphics 530 bus-ID: 00:02.0
+           Display Server: X.Org 1.18.4 drivers: intel (unloaded: fbdev,vesa)
+           Resolution: 1920x1080@60.00hz, 1920x1080@60.00hz
+           GLX Renderer: Mesa DRI Intel HD Graphics 530 (Skylake GT2)
+           GLX Version: 3.0 Mesa 18.0.5 Direct Rendering: Yes
+Audio:     Card Intel 200 Series PCH HD Audio driver: snd_hda_intel bus-ID: 00:1f.3
+           Sound: Advanced Linux Sound Architecture v: k4.4.0-171-generic
+Network:   Card: Intel Ethernet Connection (5) I219-LM driver: e1000e v: 3.2.6-k bus-ID: 00:1f.6
+           IF: enp0s31f6 state: up speed: 1000 Mbps duplex: full mac: 8c:ec:4b:7b:54:21
+Drives:    HDD Total Size: 512.1GB (25.5% used) ID-1: /dev/sda model: ADATA_SSD_DM900 size: 512.1GB
+Partition: ID-1: / size: 184G used: 55G (32%) fs: ext4 dev: /dev/dm-0
+           ID-2: /tmp size: 9.1G used: 38M (1%) fs: ext4 dev: /dev/dm-2
+           ID-3: swap-1 size: 8.19GB used: 0.24GB (3%) fs: swap dev: /dev/dm-1
+RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
+Sensors:   System Temperatures: cpu: 29.8C mobo: 27.8C
+           Fan Speeds (in rpm): cpu: N/A
+Info:      Processes: 308 Uptime: 10 days Memory: 6456.8/15911.6MB Init: systemd runlevel: 5 Gcc sys: 5.4.0
+           Client: Shell (zsh 5.6.2) inxi: 2.2.35 
+
+(binaryc_py3.6.4) ➜  population git:(population) ✗ gcc --version
+gcc (Ubuntu 5.4.0-6ubuntu1~16.04.12) 5.4.0 20160609
+Copyright (C) 2015 Free Software Foundation, Inc.
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+